The spelling of the word "capay" can be explained using the International Phonetic Alphabet (IPA) transcription. It is pronounced as /kəˈpaɪ/ with the stress on the second syllable. The first syllable is pronounced with a schwa sound (/ə/) and the second syllable has the sound of the diphthong /aɪ/. In terms of spelling, the letter "c" is used to represent the sound /k/, while "a" and "y" signify the diphthong /aɪ/. Overall, "capay" is a phonetically straightforward word in terms of its spelling.